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Abstract As the industry ages, wells often face wellbore integrity challenges such as casing breaches, poor zonal isolation, or loss zones – issues that traditionally require costly and complex interventions. This paper presents a proven simplified approach using a combination of water-swellable particulates and active fibers designed to repair casing issues. It will walk through the material's technical aspects, pumping the material through Coiled Tubing in a yard test and field case histories. The solution uses chemically inert, water-swellable particulates, combined with sticky fiber. When combined, the fibers create a lattice network for the particles to become trapped, resulting in a permanent seal for casing breaches or loss zones with bidirectional pressure integrity. The material remains stable at temperatures exceeding 482°F. The material is mixed with water or brine and then pumped into the target zone. Laboratory testing will be shared which demonstrates its sealing capacity in slot testing, and integrity under repeated pressure cycling. Testing and field trials have proven differential pressures up to 10,000 psi in both directions post seal. This paper will review field results from multiple unconventional wells, demonstrating the effectiveness of the sealing system in restoring wellbore integrity. Cases will include wells with sustained losses during P&A applications and wells with known casing integrity challenges. Field data will show that the system offers a reliable barrier even in challenging environments. Unlike conventional methods such as casing patches, this solution avoids internal diameter restrictions, enabling unrestricted flow and future treatments, and can cover large intervals of small holes. The material's conformability and bidirectional pressure integrity proves to be valuable in complex geometries and irregular break profiles. In addition to presenting technical results, the paper will also review key operational lessons learned to help optimize future deployments including pumping through small diameter Coiled Tubing, and confirmation that no mill out or complex post job interventions are required. Overall, this methodology offers a cost-effective, durable alternative to traditional repair techniques – extending well life and supporting its broader application in unconventional plays where downtime and remediation costs are critical. This is an original approach by integrating unique swellable materials and active fibers to create a high-pressure, conformable seal for remediation. This method allows well interventions to pump an easy to apply application which adapts to variable geometries within the wellbore. The technique provides an alternative for operators seeking simplified yet durable solutions, particularly where traditional remediation methods are impractical or uneconomical.